CN111795013A - A silent fan assembly - Google Patents

Abstract

The invention discloses a silent fan component, which has simple and reasonable structural design, can reduce noise, improve the heat dissipation efficiency of a fan, save energy and reduce input cost, and comprises a plurality of blades which are uniformly arranged along the circumferential direction of a base at intervals and a silent ring which circumferentially penetrates through each blade, wherein the silent ring is positioned at one end of each blade far away from the base, and the ratio range of the extension width of the silent ring along the radial direction of the base to the length of each blade is as follows: 0.01 to 0.2.

Description

A silent fan assembly

technical field

The invention relates to the technical field of heat dissipation equipment, in particular to a fan assembly that can effectively reduce fan noise.

Background technique

A fan is a device that uses a motor to drive blades to rotate, thereby accelerating air circulation. It can be used for heat dissipation in homes, offices, and electronic components. For example, fans are used for computer notebook cooling to prevent the electronic components in the computer notebook from being burned due to overheating. At present, the commonly used fans mainly include structures such as a base, uniformly spaced and fixed blades along the circumference of the base, and a motor that drives the base to rotate. However, traditional fans have problems such as large vibration amplitude and high noise.

In the prior art, a fan blade with a mute ring is provided, which can solve the above-mentioned problems of large vibration amplitude and high noise, but it has the problem of unreasonable matching between the mute ring and the blade structure. The shorter length and larger width of the mute ring will not only increase the noise, but also weaken the blowing capacity of the blades, which will seriously affect the cooling, ventilation or heat exchange efficiency of the fan; and the larger width of the mute ring will increase the gravity of the blades. , the motor needs more energy to drive the blades to rotate effectively, which leads to an increase in the energy consumption of the computer notebook. For a computer notebook with a certain battery capacity, the increase in energy consumption seriously affects the service life of the battery.

SUMMARY OF THE INVENTION

Aiming at the problems in the prior art that the configuration structure of the blades and the mute ring is unreasonable, which easily leads to loud fan noise, affects the cooling efficiency of the fan, and easily increases energy consumption, resulting in high investment cost, the present invention provides a fan assembly, which The structure design is simple and reasonable, which can reduce noise, improve the heat dissipation efficiency of the fan, save energy, and reduce input costs.

To achieve the above object, the present invention adopts the following technical solutions:

A silent fan assembly, comprising a plurality of blades evenly spaced along the circumference of a base, and a silent ring circumferentially penetrating each of the blades, characterized in that the silent ring is located at a position of the blade away from one end of the base , the ratio of the extension width of the silent ring along the radial direction of the base to the length of the blade ranges from 0.01 to 0.2.

It is further characterized by:

The blade is straight or arc-shaped;

the mute ring is located at the top, middle or bottom end of the inner side of the blade tip;

the silent ring is located at the top, middle or bottom end of the edge of the blade tip;

The mute ring is coaxially distributed with the base;

The middle part of the base is fixed with the rotor of the motor, and the rotor is driven by the motor to drive the base and the blades to rotate;

One end of the blade is fixed to the base through a connecting piece, the base includes a top wall and a peripheral wall surrounding the edge of the top wall, the top wall and the peripheral wall form a accommodating space, the peripheral wall or peripheral wall A through hole runs through the connecting position with the top wall, and the connecting piece includes a ring-shaped fixed plate matched with the base structure, one end is perpendicular to the inner edge of the top end of the fixed plate, and the other end is perpendicular to the base. The fixed plate is sleeved on the outer circumference of the base, the blade is fixed on the outer end of the fixed plate, and the outer edge of the top end of the base is provided with a through hole corresponding to the clip , the clip is embedded in the through hole, and the fixing plate and the clip are integrally formed;

The material of the mute ring, vanes and connectors are all plastic or metal, and the mute ring, vanes and connectors are integrally formed;

The mute ring is in the shape of a flat sheet along the axial direction of the rotating shaft of the mute fan assembly, and the mute ring is in the shape of a circular ring along the circumference of the base;

The thickness of the mute ring along the axial direction of the rotating shaft of the mute fan assembly is smaller than the extension width of the mute ring in the radial direction of the base, which further reduces the weight of the entire fan assembly and satisfies the lightening and thinning of the heat dissipation module by electronic equipment. Require;

The mute fan assembly is provided with at least two mute rings, and the at least two mute rings are arranged at intervals along the axial direction of the rotating shaft of the mute fan assembly; the provision of at least two mute rings further improves the fan assembly the mute effect;

The mute ring is integrally formed with the plurality of blades;

The bottom end of the connecting piece is provided with a soil filling groove, which is used for filling soil, so as to facilitate the adjustment of the balance of the fan.

An electronic device, wherein the electronic device is provided with a heat dissipation module, wherein the heat dissipation module includes the above-mentioned silent fan assembly.

The above-mentioned structure of the present invention can achieve the following beneficial effects: (1) A silent ring is arranged on the inner side of the blade tip of the blade or at the edge of the blade tip, and the blade tip of the blade is fixed by the silent ring, which can reduce the vibration amplitude of the blade and reduce the Noise caused by blade vibration.

(2) For fan blades of different widths, the ratio of the width of the silent ring to the length of the blade is set in the range of 0.01 to 0.2. Within this range, the optimal configuration of the blade and the silent ring can be achieved to avoid the wider width of the silent ring. The width leads to the problem of weakening the air blowing capacity of the blades, so it can effectively improve the heat dissipation, ventilation or heat exchange efficiency of the fan. Moreover, setting the ratio of the width of the mute ring to the length of the blade within this range can avoid the problem that the width of the mute ring is too wide and the blade bears increased gravity, thereby reducing heat dissipation energy consumption and use cost.

Description of drawings

FIG. 1 is a top-view structural schematic diagram of an embodiment of the present invention in which the mute ring is located inside the blade tip;

2 is a schematic top view of the structure of the second embodiment of the present invention in which the mute ring is located on the inner side of the blade tip;

3 is a top-view structural schematic diagram of an embodiment of the present invention in which the mute ring is located at the edge of the blade tip;

FIG. 4 is a top-view structural schematic diagram of the second embodiment of the present invention in which the mute ring is located on the inner side of the blade tip;

FIG. 5 is a cross-sectional structural schematic diagram of a front view of a partial structure of an embodiment of the mute ring in FIG. 1 or FIG. 2;

FIG. 6 is a cross-sectional structural schematic diagram of the front view of the partial structure of the second embodiment of the mute ring in FIG. 1 or FIG. 2;

FIG. 7 is a cross-sectional structural schematic diagram of the front view of the partial structure of the third embodiment of the mute ring in FIG. 1 or FIG. 2;

FIG. 8 is a cross-sectional structural schematic diagram of the front view of the partial structure of the fourth embodiment of the mute ring in FIG. 3 or FIG. 4;

FIG. 9 is a cross-sectional structural schematic diagram of the front view of the partial structure of the fifth embodiment of the mute ring in FIG. 3 or FIG. 4;

FIG. 10 is a schematic cross-sectional structural schematic diagram of the front view of the partial structure of the sixth embodiment of the mute ring in FIG. 3 or FIG. 4 .

Detailed ways

1 to 10, a silent fan assembly includes a plurality of blades 2 evenly spaced along the circumference of the base 1, and a silent ring 3 penetrating each blade 2 in the circumferential direction. The silent ring 3 rotates along the silent fan assembly. The shaft is in the shape of a flat sheet in the axial direction, and the mute ring 2 is circular along the circumference of the base 1. The base 1 rotates under the driving action of the motor (not shown in the figure), which drives the blades 2 and the mute ring 3 to rotate accordingly. The width of the mute ring 3 is smaller than the length of the blade 2. If the width of the mute ring 3 is A, and the length of the blade 2 is B, the ratio of A to B ranges from 0.01 to 0.2, that is, 0.01≤A: B≤0.2. The ratio of A to B can be 0.18, and the thickness of the silent ring 2 along the axial direction of the rotating shaft of the silent fan assembly is smaller than the extension width of the silent ring 2 along the radial direction of the base 1;

The blade 3 is fixed to the base 1 through the connecting member 4. In this embodiment, the connecting member 4 is the fan blade HUB covering the surrounding wall, the blade root of the blade 3 is fixed to the outer end of the connecting member 4, and the base 1 includes a top wall and an enclosure. The peripheral wall around the edge of the top wall, the top wall and the peripheral wall are surrounded to form an accommodation space, the peripheral wall or the connection position between the peripheral wall and the top wall has a through hole, and the connecting piece 4 includes a ring-shaped fixing plate 41 that matches the structure of the base 1, one end The clip 42 is perpendicular to the inner edge of the top end of the fixed plate 41, and the other end protrudes vertically to the inner side of the fixed plate. There is a through hole corresponding to the clamping piece 42 on the outer edge of the top end of the plate, the clamping piece 41 is embedded in the through hole, the bottom end of the fixing plate 41 is provided with a soil filling groove, the annular fixing plate 41 and the clamping piece 42 are integrally formed, and the blade 3 The connecting piece 4 is fixed to the base 1 to ensure a firm connection between the blade 3 and the base 1, and the connecting piece 4 and the base 1 are clamped and fixed through the clip 42 and the through groove, which facilitates the disassembly or replacement of the blade 3; this embodiment The number of middle blades is twenty-nine, and the mute ring 3 is coaxially distributed with the base 1;

The material of the mute ring, the blade and the connector are all plastic or metal, and the mute ring, the blade and the connector are integrally formed.

After adopting the above structure of the silent fan assembly, the blades and the silent ring can be optimally combined and configured in the following ways:

Embodiment 1, an embodiment in which the mute ring 3 is located on the inner side of the blade tip, and the combined structure of the embodiment of the mute ring, the blade 2 is a straight plate shape (see FIG. 1 ) or arc (see FIG. 2 ), and the mute ring 3 is located in the The upper end of the inner side of the blade tip (see Figure 5);

The second embodiment, an embodiment in which the mute ring 3 is located on the inner side of the blade tip, and the combined structure of the second embodiment of the mute ring, the blade 2 is straight plate shape (see Figure 1) or arc (see Figure 2), and the mute ring 3 is located in the second embodiment. The middle part of the inner side of the blade tip (see Figure 6);

The third embodiment, an embodiment in which the mute ring 3 is located on the inner side of the blade tip, and the combined structure of the third embodiment of the mute ring, the blade 2 is a straight plate (see Figure 1) or arc (see Figure 2), and the mute ring 3 is located at the The lower end of the inner side of the blade tip (see Figure 7);

The fourth embodiment, the second embodiment in which the mute ring 3 is located at the edge of the blade tip, and the combined structure of the fourth embodiment of the mute ring, the blade 2 is a straight plate (see Figure 3) or arc (see Figure 4), and the mute ring 3 is located at the The upper end of the edge of the blade tip (see Figure 8);

The fifth embodiment, the second embodiment in which the mute ring 3 is located at the edge of the blade tip, and the combined structure of the fifth embodiment of the mute ring, the blade 2 is a straight plate shape (see Figure 3) or an arc (see Figure 4), and the mute ring 3 is located in the fifth embodiment. The middle of the edge of the blade tip (see Figure 9);

The sixth embodiment, the second embodiment in which the mute ring 3 is located at the edge of the blade tip, and the combined structure of the sixth embodiment of the mute ring, the blade 2 is a straight plate shape (see Figure 3) or an arc (see Figure 4), and the mute ring 3 is located in the sixth embodiment. The lower end of the edge of the blade tip (see Figure 10).

In the above embodiments 1 to 6, when the blade 2 is curved, the edges on both sides of the blade 2 are arc-shaped, which can increase the airflow contact surface of the blade, increase the air volume of the fan, and further improve the heat dissipation of the blade. Efficiency: Compared with the structure in which the silent ring 3 is located at the edge of the blade tip in Embodiments 4 to 6, the silent ring 3 in Embodiments 1 to 3 is located on the inner side of the blade tip, so that the edge of the blade tip of the blade 3 is connected to the airflow. The contact is more sufficient, so the silent ring 3 is located on the inner side of the blade tip, and the ratio of A to B is set to 0.01~0.2, which can not only prevent the vibration amplitude of the rotating blade 2 from being too large, reduce noise, but also Embodiments 1 to 3 can further improve the heat dissipation efficiency of the blade. Setting the ratio of the width of the silent ring to the length of the blade is 0.01 to 0.2, which can also avoid the problem of heavy blade gravity and high energy consumption caused by the width of the silent ring being too wide. Therefore, energy consumption and use can be reduced. cost to meet the requirements of thin and light fans.

The above descriptions are only preferred embodiments of the present application, and the present invention is not limited to the above embodiments. It can be understood that other improvements and changes directly derived or thought of by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included within the protection scope of the present invention.

Claims (10)

1. A silent fan component comprises a base, a plurality of blades circumferentially arranged along the base at intervals, and a silent ring circumferentially connecting the blades, wherein the silent ring is positioned at the position where one end of the blade is far away from the base, and the ratio range of the extension width of the silent ring along the radial direction of the base to the length of the blade is as follows: 0.01 to 0.2.

2. A quiet fan assembly as claimed in claim 1, wherein: the blade is in a shape of a straight plate or an arc.

3. A quiet fan assembly as claimed in claim 1, wherein: the silent ring is positioned at the top end, the middle part or the bottom end of the inner side of the blade tip at one end of the blade far away from the base.

4. A quiet fan assembly as claimed in claim 2, wherein: the silent ring is positioned at the top end, the middle part or the bottom end of the edge of the blade tip at one end of the blade, which is far away from the base.

5. A quiet fan assembly as claimed in claim 1, wherein: the one end of blade passes through the connecting piece with the base is fixed, the base includes the roof and encloses the perisporium of establishing roof edge a week, the roof encloses with the perisporium and establishes and form an accommodation space, the perisporium or the hookup location of perisporium and roof run through there is the through-hole, the connecting piece including combine in the fixed disk of perisporium outer peripheral face and pass the through-hole and with the fastener of the internal surface combination of roof, fixed disk and fastener integrated into one piece, perhaps fixed disk, fastener and blade integrated into one piece.

6. A quiet fan assembly as claimed in claim 1, wherein: the silence ring is flat slice along the rotation axis axial of silence fan unit spare, the silence ring is the ring shape along base circumference.

7. A quiet fan assembly as claimed in claim 1, wherein: the thickness of the mute ring along the axial direction of the rotating shaft of the mute fan component is smaller than the extension width of the mute ring along the radial direction of the base.

8. A quiet fan assembly as claimed in claim 1, wherein: the mute fan assembly is provided with at least two mute rings which are arranged at intervals along the axial direction of a rotating shaft of the mute fan assembly.

9. A quiet fan assembly as claimed in claim 1, wherein: the mute ring and the blades are integrally formed.

10. An electronic device, wherein a heat dissipation module is disposed inside the electronic device, and the heat dissipation module comprises the mute fan assembly according to any one of claims 1 to 9.

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